/*
 * COPYRIGHT. ShenZhen MinSiDa Technology Co., Ltd. 2015.
 * ALL RIGHTS RESERVED.
 *
 * No part of this publication may be reproduced, stored in a retrieval system, or transmitted,
 * on any form or by any means, electronic, mechanical, photocopying, recording, 
 * or otherwise, without the prior written permission of ShenZhen MinSiDa Technology Co., Ltd.
 *
 * Amendment History:
 * 
 * Date                   By              Description
 * -------------------    -----------     -------------------------------------------
 * 2015年2月5日    Li Chao         Create the class
*/

package com.jungle.sp.daily.util;

import cn.hutool.core.util.StrUtil;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Map;


/**
 * @FileName HttpPostUtil.java
 * @Description: 
 * @Date 2018年10月23日 
 * @author LiChuanJi
 * @version 1.0
 * 
 */
public class HttpPostUtil {
	private static final Log log = LogFactory.getLog(HttpPostUtil.class);
	public static String postRequest(String url, Map<String, String> parameters) throws Exception {
		HttpClient httpClient = new HttpClient();
		PostMethod method = new PostMethod(url);
		int statusCode;
		String responseCharSet ="";
		String responseString = "";
		try {
			for (String key : parameters.keySet()) {
				method.addParameter(key, parameters.get(key));
			}
			method.addRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
			if(StrUtil.isNotEmpty(parameters.get("body"))){
				method.setRequestBody(parameters.get("body"));
			}
			
			statusCode = httpClient.executeMethod(method);
			if (statusCode != HttpStatus.SC_OK) {
				System.out.println("Method failed: " + method.getStatusLine());
				System.out.println("Http服务链路异常:服务器状态码为" + statusCode);
				log.info("Method failed: " + method.getStatusLine());
				log.info("Http服务链路异常:服务器状态码为" + statusCode);
			}
			responseCharSet = method.getResponseCharSet();
			responseString = method.getResponseBodyAsString();
			if (responseCharSet.equals("ISO-8859-1")) {
				responseString = new String(responseString.getBytes(responseCharSet), "UTF-8");
			}
			
		} catch (Throwable e) {
			System.out.println("Http服务链路异常:" + e.getMessage() + e);
			log.info("Http服务链路异常:" + e.getMessage() + e);
		} finally {
			method.releaseConnection();
		}
		return responseString;
	}
	
    /**
     * 向指定 URL 发送POST方法的请求
     * 
     * @param url
     *            发送请求的 URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            HttpURLConnection conn = (HttpURLConnection) realUrl
                    .openConnection();
            // 设置通用的请求属性
            conn.setRequestMethod("POST"); //设置请求方法
            conn.setRequestProperty("Charsert", "UTF-8"); //设置请求编码
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    conn.getInputStream(), "utf-8"));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        return result;
    }
}
